Removed debug code
phpdoc fixes, unused variable
Removed unused imports
Fixes #1937: Fixed wrong behavior or advanced app's `init --env` when called without parameter actually specified
Updated extension docs to be less restrictive about choosing namespace, more neutral composer.json example
Fixes #1326: The `visible` setting for `DetailView` doesn't work as expected
fixed formatting
Persian (Farsi) Message Translations (fa-IR)
resolve a little bug in arabic translation file
Merge pull request #1938 from NabiKAZ/patch-1

resolve a little bug in arabic translation file
Some code style fixes [skip ci]
Merge pull request #1939 from NabiKAZ/fa_ir-translate-messages

Persian (Farsi) Message Translations (fa-IR)
Ukrainian translations
Merge pull request #1941 from yiiframework-com-ua/uk_translate

Ukrainian translations
Merge pull request #1940 from lucianobaraglia/some-cs-fixes

Some code style fixes [skip ci]
Fixes #1921: Grid view ActionColumn now allow to name buttons like `{controller/action}`
Migration command show correct directory path while it not exist
Merge pull request #1942 from creocoder/migrate-command-fix

Migration command show correct directory path while it not exist
ModelSerializer WIP
Fixed typo in Russian messages